Hosting & CDN
Investigate delivery, migration behavior and caching ownership.
Trusted resources
Use these primary references alongside the practical guides below.
503 errors after cache preload: investigate capacity before increasing retries
Correlate WordPress preload activity with temporary failures, narrow the workload and protect important routes during recovery.
Read the guideA performance checklist after moving WordPress hosting
Verify cache ownership, image URLs and representative visitor tasks after a hosting migration.
Read the guideAudit redirect chains before blaming WordPress TTFB
Trace scheme, hostname and trailing-slash redirects, update internal links and verify canonical destinations without breaking old URLs.
Read the guideDoes your WordPress site need a CDN? A decision worksheet
Compare visitor locations, delivery evidence and operational responsibilities before adding another caching layer.
Read the guideIs compression working? Verify WordPress text responses
Compare Content-Encoding, transferred size and response type to diagnose ineffective compression without recompressing already compressed media.
Read the guideWhy a full cache purge creates a traffic spike at the origin
Plan narrower invalidation and controlled warmup by observing miss bursts, expensive pages and background workload after a purge.
Read the guideWordPress TTFB: when the wait starts before the page arrives
Separate server response time from the work that happens inside the browser.
Read the guide